feat: major engine overhaul - scene demo with lighting, sphere, ground

- Scene Demo: cube + sphere + ground plane with proper lighting
- Audio: XAudio2 dynamic loading + WAV playback
- Physics: expanded collision system
- Renderer: improved pipeline with materials
- UI: extended widget system
- VisualScript: enhanced serializer + block interactions
- ASM: optimized math/memory/profiling routines
- Window: mouse input + scroll support

Engine/Physics/physics.h

@@ -16,6 +16,15 @@ typedef enum {
     COLLIDER_PLANE,
 } ColliderType;
 
+typedef struct {
+    Vec3 velocity;
+    Vec3 acceleration;
+    float mass;
+    float restitution;
+    float friction;
+    int is_kinematic;
+} RigidBody;
+
 typedef struct {
     uint32_t entity_id;
     ColliderType type;
@@ -26,17 +35,9 @@ typedef struct {
     };
     int is_trigger;
     int is_static;
+    RigidBody body;
 } Collider;
 
-typedef struct {
-    Vec3 velocity;
-    Vec3 acceleration;
-    float mass;
-    float restitution;
-    float friction;
-    int is_kinematic;
-} RigidBody;
-
 typedef struct {
     Collider colliders[MAX_COLLIDERS];
     uint32_t collider_count;
@@ -63,6 +64,11 @@ int physics_check_collision(const Collider* a, const Collider* b, Vec3* normal,
 int physics_raycast(PhysicsWorld* world, Vec3 origin, Vec3 direction, float max_dist,
                     uint32_t* hit_entity, Vec3* hit_point, Vec3* hit_normal);
 
+// 刚体
+RigidBody* physics_get_body(PhysicsWorld* world, uint32_t index);
+void physics_apply_force(PhysicsWorld* world, uint32_t index, Vec3 force);
+void physics_apply_impulse(PhysicsWorld* world, uint32_t index, Vec3 impulse);
+
 // 模拟
 void physics_step(PhysicsWorld* world, float dt);
 void physics_set_gravity(PhysicsWorld* world, Vec3 gravity);